Cartridge magazine for machine pistols and the like



July 18, 1950 K. H. SUNDEN 2,515,809

CARTRIDGE MAGAZINE FOR MACHINE Prs'rons AND THE LIKE Filed March 15, 1949 351;..2. Fig-4.

' a *5 ii 9 J46 Patented July 18, 1950 OFFICE CARTRIDGE MAGAZINE FOR MACHINE PISTOLS AND THE LIKE Karl Henrik Sundn, Lindesberg, Sweden Application March 15, 1949, Serial No. 81,522 In Sweden March 30, 1948 1 Claim.

This invention relates to an improvement in cartridge magazines for machine pistols and the like and more particularly to an improved closure for such magazines.

An object of the invention is to simplify the manufacture of the magazine and to provide a closure which can be opened in a simple manner without the use of any specific tool.

According to my present invention the closure of the magazine consists of an inner and an outer plate of which the inner one in well-known manner forms a stud for the magazine spring and is provided with means for locking the outer plate, While the latter plate at two opposite edges is provided with projections adapted to engage corresponding slots in the magazine body by displacing the plate first in one direction whereby the projections at one edge of the plate are brought to engage the corresponding slots in one side wall of the magazine body, and then in the opposite direction whereby also the projections at the opposite edge of the plate are brought to engage their corresponding slots in the magazine wall, while the locking device simultaneously locks the outer plate in its closing position.

In the accompanying drawing I have shown the preferred embodiment of my invention. Fig. 1 shows a longitudinal section of the rear end of a cartridge magazine for a machine pistol having a closure according to my invention. Figs. 2 and 3 are end elevations of the magazine showing the outer closure plate in different positions. Fig. 4 is a, sectional view corresponding to Fig. 1 but showing the outer closure plate in a position during its insertion in or removal from the magazine.

Referring now to the drawing, I designates the magazine body and. 2 a spring for feeding the cartridges towards the front end of the magazine in well-known manner. The rear end of said spring abuts against a seat ill on an inner closure plate 3 the size of which substantially corresponds to the inner section of the magazine so that it easily can be inserted in the rear end of the magazine and slide therein. Over said plate 3 an outer closure plate 4 is provided, said plate having at each of two opposite edges one or more projections 5 and 6 respectively, preferably formed by cutting the plate together with its projections from a plane sheet metal blank. The projection or projections 5 at one end are somewhat longer than the projection or projections 6 at the opposite edge of the plate. The projections 5 and 6 are adapted to cooperate with corresponding slots H and [2 near the rear end of the magazine body or in fittings 1 secured to the magazine. Between the two plates 3 and 4 locking means are provided consisting for instance of an opening 9 in the outer plate 4 and a button 8 secured to the inner plate 3 and adapted to snap into said opening 9 under the action of the magazine spring 2 when the plate 4 has been inserted in its place as shown in Fig. 1.

In opening the magazine the inner plate 3 is first depressed by a push on the button 8, whereby the button is brought to disengage the opening 9 in the outer plate 4. Then the outer plate 4 is displaced (by a movement to the left in Fig. 1) to such extent that its shorter projections 6 disengage their corresponding slots it. By the action of the spring 2 on the inner plate 3 the button 8 now turns the plate 4 to the position shown in Fig. 4 whereupon the plate 4 can be removed by displacing it to the right until the projection 5 disengages its corresponding slot I l in the magazine wall or the fitting l secured to the magazine. The inner plate 3 is then also free so that it can be pressed out of the magazine by the spring 2. In closing the magazine the operation is reversed in such manner that the inner plate 3 is first inserted in the magazine whereupon the outer plate 4 is inserted in the oblique position shown in Fig. 4 with its projection 5 fully engaging the slot I I. The plate 4 is then depressed together with the inner plate 3 until the projections 6 are in line with the slots l2, whereupon the plate 4 is displaced to the right until the projections 6 engage the slots l2 and the button 8 engages the opening 9, thus locking the plate 4 in its closing position above the plate 3.

What I claim is:

A closure for cartridge magazines for machine pistols and the like, comprising an inner plate fitting in the magazine, a spring in the magazine engaging said plate, an outer plate having projections at two opposite edges adapted to engage corresponding slots at the rear end of the magazine body, and a locking device for locking the outer plate to the inner plate when both plates are in closing position in relation to the magazine body.

KARL HENRIK SUNDEN.

No references cited. 

